Home / 142,027.28-195,997.51-78,365.08

Finding the Fourth Proportional to 142,027.28, 195,997.51 and 78,365.08

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Solution

The fourth proportional to 142,027.28, 195,997.51 and 78,365.08 is: 108,143.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,027.28 : 195,997.51 = 78,365.08 : x
  2. Step 2: Convert to fraction form
    142,027.28/195,997.51 = 78,365.08/x
  3. Step 3: Cross multiply
    142,027.28x = 195,997.51 × 78,365.08
  4. Step 4: Simplify right side
    142,027.28x = 15,359,360,550.95
  5. Step 5: Solve for x
    x = 15,359,360,550.95/142,027.28
  6. Step 6: Final answer
    x = 108,143.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.